#Question id: 11049
#Unit 6. System Physiology – Plant
Match the CORRECT combination of the phloem elements
with its function.
PHLOEM ELEMENTS
FUNCTIONS
P) sieve tube elements i) for protection and strengthening of the tissue
Q) sieve cells ii) store and release
food molecules
R) companion cells iii) food translocation in angiosperm
S) Phloem parenchyma cells iv) latex containing cells
T)
Phloem fibers and sclereids v) help in flow of solute
and show high, metabolic activity
U) laticifers vi) food translocation on gymnosperm
#Question id: 1515
#Unit 4. Cell Communication and Cell Signaling
Following statements are regarding to metastasis (using breast carcinoma cells as an example).
A. Cancer cells leave the main tumor and attack the basement membrane, using extracellular matrix (ECM) fibers to reach the blood vessels.
B. The cancer cells can be attracted by signals such as epidermal growth factor (EGF), which can be secreted by macrophages.
C. At the blood vessels they penetrate the layer of endothelial cells that forms the vessel walls and enter the bloodstream.
D. Carcinoma cells penetrate the extracellular matrix and blood vessel wall by extending “invadopodia,” which produce matrix metalloproteases and other proteases to open up a path.
Which of the following statement shows process of angiogenesis?
#Question id: 13154
#Unit 2. Cellular Organization
#Question id: 5588
#Unit 5. Developmental Biology
The progenitor cells of blood vessels are called as:
#Question id: 28234
#Unit 5. Developmental Biology
which statement is correct the Principles of stem cell regulation?